Gary T. Brooks is a member of both New Hampshire and Vermont Bar Associations, and has practiced law in the Upper Valley for 35 years, specializing in trusts and estates and corporate law. Prior to beginning his law career, Gary worked in Washington as a legislative aide to the late Congressman Dante Fascell (D-Fla.), and as Assistant Dean of the College at Dartmouth.

Gary is a member of the Advisory Board of Trustees of Opera North, and has been a chorus member in numerous Opera North productions. He is past Chair of the Board of Trustees of The Montshire Museum of Science, and has served on the Board of Trustees of The Sharon Academy and the Sports Venue Foundation, and holds an appointment as Adjunct Professor of Law at Vermont Law School. Gary is Vice Chair of the Board of Directors and is Chair of the Governance Committee of Research Systems Group, Inc., a national environmental and engineering consulting firm with offices in White River Junction, Vermont, Chicago, Illinois, and Salt Lake City, Utah. Gary serves as a Trustee of the Norwich Congregational Church, and as a Director and past President of the Dartmouth Lawyers Association.

He is a founder and past President of the Dartmouth Lawyers Association, an organization of Dartmouth alumni involved in the legal profession, with 1,200 members from 44 states and more than 20 foreign countries. He is also a recipient of the Dartmouth Alumni Award for his service to the College as class president, class treasurer, reunion chairman, and as a member of the Dartmouth Alumni Council.

Gary and his wife, Barbara Duncan, an environmental activist, live in Hanover, New Hampshire, and on Lake Morey in Fairlee, Vermont. Gary has two daughters and a son, and four grandsons.